This chapter discusses several sociological explanations for delinquency. It summarizes Shaw and McKay's ecological perspective that found crime was concentrated in urban areas with high populations of low-SES individuals, immigrants, and African Americans. This was attributed to "social disorganization" where residents could not exert control. It also reviews learning theories like differential association, which argues deviance is learned through social interactions, and subcultural theories, which suggest youth often act according to different, conflicting values from the larger society.